Even though TSR don't exist any more? I know, WotC would have inherited ownership of them.

Still, fascinating to know there was more information there than it appeared at the time. The guys at Candlekeep (including MarkusTay up above) spent ages trying to put together a map of Osse before getting stymied because the 'satellite map' from the atlas and those weird lines turned out to be canon (or at least canon in 1999) and didn't fit in with what they were doing.